software.amazon.awscdk.services.emr

Interface CfnCluster.ScalingRuleProperty

All Superinterfaces:

software.amazon.jsii.JsiiSerializable

All Known Implementing Classes:

CfnCluster.ScalingRuleProperty.Jsii$Proxy

Enclosing class:

CfnCluster

@Stability(value=Stable)
public static interface CfnCluster.ScalingRuleProperty
extends software.amazon.jsii.JsiiSerializable

`ScalingRule` is a subproperty of the `AutoScalingPolicy` property type.

ScalingRule defines the scale-in or scale-out rules for scaling activity, including the CloudWatch metric alarm that triggers activity, how EC2 instances are added or removed, and the periodicity of adjustments. The automatic scaling policy for an instance group can comprise one or more automatic scaling rules.

Example:

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.services.emr.*;
 ScalingRuleProperty scalingRuleProperty = ScalingRuleProperty.builder()
         .action(ScalingActionProperty.builder()
                 .simpleScalingPolicyConfiguration(SimpleScalingPolicyConfigurationProperty.builder()
                         .scalingAdjustment(123)
                         // the properties below are optional
                         .adjustmentType("adjustmentType")
                         .coolDown(123)
                         .build())
                 // the properties below are optional
                 .market("market")
                 .build())
         .name("name")
         .trigger(ScalingTriggerProperty.builder()
                 .cloudWatchAlarmDefinition(CloudWatchAlarmDefinitionProperty.builder()
                         .comparisonOperator("comparisonOperator")
                         .metricName("metricName")
                         .period(123)
                         .threshold(123)
                         // the properties below are optional
                         .dimensions(List.of(MetricDimensionProperty.builder()
                                 .key("key")
                                 .value("value")
                                 .build()))
                         .evaluationPeriods(123)
                         .namespace("namespace")
                         .statistic("statistic")
                         .unit("unit")
                         .build())
                 .build())
         // the properties below are optional
         .description("description")
         .build();
 

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	CfnCluster.ScalingRuleProperty.Builder A builder for CfnCluster.ScalingRuleProperty
static class	CfnCluster.ScalingRuleProperty.Jsii$Proxy An implementation for CfnCluster.ScalingRuleProperty

Method Summary

Modifier and Type	Method and Description
static CfnCluster.ScalingRuleProperty.Builder	builder()
Object	getAction() The conditions that trigger an automatic scaling activity.
default String	getDescription() A friendly, more verbose description of the automatic scaling rule.
String	getName() The name used to identify an automatic scaling rule.
Object	getTrigger() The CloudWatch alarm definition that determines when automatic scaling activity is triggered.

Methods inherited from interface software.amazon.jsii.JsiiSerializable

$jsii$toJson

Method Detail

getAction

@Stability(value=Stable)
 @NotNull
Object getAction()

The conditions that trigger an automatic scaling activity.

getName

@Stability(value=Stable)
 @NotNull
String getName()

The name used to identify an automatic scaling rule.

Rule names must be unique within a scaling policy.

getTrigger

@Stability(value=Stable)
 @NotNull
Object getTrigger()

The CloudWatch alarm definition that determines when automatic scaling activity is triggered.

getDescription

@Stability(value=Stable)
 @Nullable
default String getDescription()

A friendly, more verbose description of the automatic scaling rule.

builder

@Stability(value=Stable)
static CfnCluster.ScalingRuleProperty.Builder builder()

Returns:

a CfnCluster.ScalingRuleProperty.Builder of CfnCluster.ScalingRuleProperty